CN203939810U - A kind of oil hydraulic cylinder of built-in variable throttling damping device - Google Patents
A kind of oil hydraulic cylinder of built-in variable throttling damping device Download PDFInfo
- Publication number
- CN203939810U CN203939810U CN201420290644.4U CN201420290644U CN203939810U CN 203939810 U CN203939810 U CN 203939810U CN 201420290644 U CN201420290644 U CN 201420290644U CN 203939810 U CN203939810 U CN 203939810U
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- piston
- oil
- runner
- damping device
- cylinder
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of oil hydraulic cylinder of built-in variable throttling damping device, comprise cylinder body, piston, piston rod, front end housing and back cylinder cover, between piston and cylinder body, be provided with sealing gasket, front end housing is provided with filler opening, on piston, be fixedly connected with cone-shaped plunger, back cylinder cover lateral centre is provided with oil outlet, and back cylinder cover vertical direction is provided with runner, between runner and oil back chamber, be respectively equipped with the first transverse flow channels and the second transverse flow channels, in runner, be provided with successively one-way valve and adjusting screw.By variable throttling damping device is set in cylinder interior, when use, without separately adding again other devices, in ensureing cushioning effect, greatly simplify the complexity of hydraulic system.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, especially a kind of oil hydraulic cylinder of built-in variable throttling damping device.
Background technique
When the workpiece quality of Driven by Hydraulic Cylinder larger, when travelling speed is very fast again, because the momentum having is larger, cause at stroke at the end, the phenomenon that piston and cylinder cap bump against easily occurs, produce hydraulic shock and noise, element in even damage system, for this reason, often need to arrange damping device.What now conventionally adopt at present is these class flow control devices such as relief valve, sequence valve, throttle valve or accumulator to be set in hydraulic system cushion, when such external is buffered in working conditions change, easily buffer element is adjusted, but system circuit complexity, and cushioning effect is subject to the impact of other parts of system.
Model utility content
For solving the problems of the technologies described above, the utility model provides a kind of oil hydraulic cylinder that is provided with variable throttling damping device in cylinder interior, without separately adding other devices, simple and convenient when use again, and good buffer effect.
For achieving the above object, the technical solution of the utility model is: a kind of oil hydraulic cylinder of built-in variable throttling damping device, comprise cylinder body, piston, piston rod, front end housing and back cylinder cover, between piston and cylinder body, be provided with sealing gasket, front end housing is provided with filler opening, on piston, be fixedly connected with cone-shaped plunger, back cylinder cover lateral centre is provided with oil outlet, back cylinder cover vertical direction is provided with runner, between runner and oil back chamber, be respectively equipped with the first transverse flow channels and the second transverse flow channels, in runner, be provided with successively one-way valve and adjusting screw.
As the further setting of such scheme, cone-shaped plunger maximum diameter equals oil outlet diameter.
The beneficial effects of the utility model are: by variable throttling damping device is set in cylinder interior, when use, without separately adding other devices, in ensureing cushioning effect, greatly simplified the complexity of hydraulic system again.
Brief description of the drawings
Structural representation when Fig. 1 is the normal backhaul of the utility model piston;
Structural representation when Fig. 2 is the utility model buffer piston.
In figure: cylinder body 1, piston 2, piston rod 3, front end housing 41, back cylinder cover 42, sealing gasket 5, filler opening 6, cone-shaped plunger 7, oil outlet 8, runner 9, oil back chamber 10, the first transverse flow channels 111, the second transverse flow channels 112, one-way valve 12, adjusting screw 13.
Embodiment
Below in conjunction with accompanying drawing, and, the utility model is described further in conjunction with the embodiments.
Embodiment:
As shown in Figure 1 and Figure 2, a kind of oil hydraulic cylinder of built-in variable throttling damping device, comprise cylinder body 1, piston 2, piston rod 3, front end housing 41 and back cylinder cover 42, between piston 2 and cylinder body 1, be provided with sealing gasket 5, front end housing 41 is provided with filler opening 6, on piston 2, be fixedly connected with cone-shaped plunger 7, back cylinder cover 42 lateral centre are provided with oil outlet 8, back cylinder cover 42 vertical directions are provided with runner 9, between runner 9 and oil back chamber 10, be respectively equipped with the first transverse flow channels 111 and the second transverse flow channels 112, in runner 9, be provided with successively one-way valve 12 and adjusting screw 13.
Cone-shaped plunger 7 maximum diameters equal oil outlet 8 diameters, to improve the effect of throttling buffering.
Working principle of the present utility model is: in the time of piston 2 quick return, first enter oil outlet 8 by cone-shaped plunger 7, hydraulic oil in restriction oil back chamber 10 is to the flow of oil outlet 8 oil returns, by utilizing the more and more less feature in gap between cone-shaped plunger 7 and oil outlet 8, make progressively to form enclosed space between piston 2 and back cylinder cover 42, fluid can only flow out from this gap, when gap more and more hour, in enclosed space, pressure progressively increases, thereby forces piston 2 retarding brakings to realize buffering until stop.In addition, in the time that cone-shaped plunger 7 enters oil outlet 8 completely, can hydraulic oil be discharged from the second transverse flow channels 112, oil outlet 8 by adjusting screw 13.One-way valve 12 is housed on runner 9, in the time of 2 reversing motion of needs piston, hydraulic oil can be flowed freely in oil back chamber 10, move thereby promote piston 2 simultaneously.
Claims (2)
1. the oil hydraulic cylinder of a built-in variable throttling damping device, comprise cylinder body (1), piston (2), piston rod (3), front end housing (41) and back cylinder cover (42), between described piston (2) and cylinder body (1), be provided with sealing gasket (5), described front end housing (41) is provided with filler opening (6), it is characterized in that: on described piston (2), be fixedly connected with cone-shaped plunger (7), described back cylinder cover (42) lateral centre is provided with oil outlet (8), described back cylinder cover (42) vertical direction is provided with runner (9), between described runner (9) and oil back chamber (10), be respectively equipped with the first transverse flow channels (111) and the second transverse flow channels (112), in described runner (9), be provided with successively one-way valve (12) and adjusting screw (13).
2. the oil hydraulic cylinder of a kind of built-in variable throttling damping device as claimed in claim 1, is characterized in that: described cone-shaped plunger (7) maximum diameter equals oil outlet (8) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290644.4U CN203939810U (en) | 2014-05-30 | 2014-05-30 | A kind of oil hydraulic cylinder of built-in variable throttling damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290644.4U CN203939810U (en) | 2014-05-30 | 2014-05-30 | A kind of oil hydraulic cylinder of built-in variable throttling damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939810U true CN203939810U (en) | 2014-11-12 |
Family
ID=51859126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420290644.4U Expired - Fee Related CN203939810U (en) | 2014-05-30 | 2014-05-30 | A kind of oil hydraulic cylinder of built-in variable throttling damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561371A (en) * | 2018-04-26 | 2018-09-21 | 温州至上精密机械有限公司 | A kind of New Buffering oil cylinder |
-
2014
- 2014-05-30 CN CN201420290644.4U patent/CN203939810U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561371A (en) * | 2018-04-26 | 2018-09-21 | 温州至上精密机械有限公司 | A kind of New Buffering oil cylinder |
| CN108561371B (en) * | 2018-04-26 | 2023-08-29 | 至上重工有限公司 | Novel buffer oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20160530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |